CN113415207B - Hydraulic locking mechanism of pure electric heavy-duty truck power-exchanging system - Google Patents
Hydraulic locking mechanism of pure electric heavy-duty truck power-exchanging system Download PDFInfo
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- CN113415207B CN113415207B CN202110907942.8A CN202110907942A CN113415207B CN 113415207 B CN113415207 B CN 113415207B CN 202110907942 A CN202110907942 A CN 202110907942A CN 113415207 B CN113415207 B CN 113415207B
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- 230000007246 mechanism Effects 0.000 title claims abstract description 22
- 238000006243 chemical reaction Methods 0.000 claims abstract description 21
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 17
- 239000003921 oil Substances 0.000 claims description 56
- 230000000694 effects Effects 0.000 abstract description 5
- 230000005484 gravity Effects 0.000 abstract description 3
- 230000009467 reduction Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 9
- 230000008569 process Effects 0.000 description 6
- 230000009471 action Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/80—Exchanging energy storage elements, e.g. removable batteries
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K1/00—Arrangement or mounting of electrical propulsion units
- B60K1/04—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Power Engineering (AREA)
- Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
- Handcart (AREA)
Abstract
The application discloses a hydraulic locking mechanism of a pure electric heavy-duty truck power conversion system, which relates to the technical field of heavy-duty truck power conversion and comprises a hydraulic lock and an upper lifting lug matched with the hydraulic lock; the hydraulic lock is used for being fixedly connected with the power conversion base of the pure electric heavy truck and is provided with a main lock hook and an auxiliary lock hook which are matched with each other; the upper lifting lug is used for being fixedly connected with a battery frame of the battery replacement of the pure electric heavy truck, and is provided with a lock pin which is fixedly matched with the main lock hook and the auxiliary lock hook. The application has the advantages that the bottom limiting part is pressed downwards to rotate by the self gravity of the battery replacement frame, so that the upper lifting lug on the battery replacement frame is locked in the hydraulic lock of the battery replacement base when the main lock hook is matched with the auxiliary lock hook, and the application has the advantages of simple structure, wide matching locking range and obvious reduction of positioning difficulty; meanwhile, the auxiliary lock hook is driven to rotate through the top ejector rod of the hydraulic oil cylinder, so that an unlocking effect is achieved after the main lock hook rotates, and the hydraulic locking mechanism is prevented from being opened due to deformation of the battery box.
Description
Technical Field
The application relates to the technical field of heavy-duty truck power conversion, in particular to a hydraulic locking mechanism of a pure electric heavy-duty truck power conversion system.
Background
At present, in the field of electric heavy-duty truck battery replacement, a heavy-duty truck battery box adopts a structure capable of being replaced quickly so as to complete quick and effective battery box replacement in a special battery replacement station. In the power exchange process, the battery box for power exchange is taken down under the action of a special power exchange device, the discharged battery box is put into a charging station, and then the battery box with full charge on the charging station is loaded on an electric heavy card. Therefore, the container is hoisted and taken down under the action of the special hoisting clamp, and the battery box replacement operation in a short time is completed.
However, since the battery box adopts a hoisting mode in the power exchange process, and in the prior art, the hoisting clamp adopts a winding steel cable mode to realize up-and-down motion, so that the horizontal precision of the hoisting clamp is difficult to realize high-precision positioning, so that the positioning in the battery box placement process is difficult, and after the locking fixation of the battery box is completed, the battery box and the battery box base are deformed along with the long-time running of a power exchange vehicle, so that the installation stability of the battery box is reduced, the circuit connection safety between the battery box and a heavy truck and the traveling safety of the heavy truck are influenced, and the improvement is needed.
Disclosure of Invention
Therefore, the application aims to provide the hydraulic locking mechanism of the pure electric heavy-duty truck power conversion system so as to achieve the aim of improving the locking stability and safety. The specific scheme is as follows:
A hydraulic locking mechanism of a pure electric heavy truck power-changing system comprises a hydraulic lock and an upper lifting lug matched with the hydraulic lock;
the hydraulic lock is used for being fixedly connected with the power conversion base of the pure electric heavy truck and is provided with a main lock hook and an auxiliary lock hook which are matched with each other;
The upper lifting lug is used for being fixedly connected with a battery frame of the battery replacement of the pure electric heavy truck, and is provided with a lock pin which is fixedly matched with the main lock hook and the auxiliary lock hook.
Preferably: the main lock hook is provided with a top limit part, a bottom limit part and a locking groove between the top limit part and the bottom limit part, and the locking groove is matched with the lock pin and is used for inserting and locking the lock pin.
Preferably: the auxiliary lock hook is provided with an abutting driving part and an abutting locking part, a hydraulic cylinder which is used for abutting against the lower side of the abutting driving part and driving the auxiliary lock hook to rotate is arranged in the hydraulic lock, and the bottom of the abutting locking part is used for abutting against the upper side of the bottom limiting part so as to limit the lock pin in the locking groove.
Preferably: the auxiliary lock hook is provided with an auxiliary lock shaft for circumferential rotation, the auxiliary lock shaft is sleeved with a primary torsion spring, and the primary torsion spring is used for driving the bottom of the abutting locking part to abut against a top ejector rod of the hydraulic oil cylinder; the main lock hook is provided with a main lock shaft for circumferential rotation, the main lock shaft is sleeved with a secondary torsion spring, and the secondary torsion spring is used for driving the bottom limiting part to do upward rotation movement by taking the main lock shaft as an axis.
Preferably: the hydraulic lock is provided with a fixed abutting frame, the hydraulic oil cylinder is fixedly arranged on the fixed abutting frame, the primary torsion spring abuts against the fixed abutting frame, and downward rotating acting force is applied to the abutting driving part.
Preferably: the hydraulic lock is provided with a primary return sensor and a secondary return sensor, and the primary return sensor is matched with the auxiliary lock hook and is used for detecting the reset state of a top ejector rod of the hydraulic oil cylinder; the secondary return sensor is matched with the main lock hook and used for detecting the locking state of the bottom limiting part.
Preferably: the hydraulic cylinder is connected with an oil pipe, the oil pipe is connected with a multi-way valve block, and the multi-way valve block is connected with a power unit.
Preferably: the power unit comprises an electromagnetic reversing valve connected with the multi-way valve block, an manual-automatic oil pump connected with the electromagnetic reversing valve and a manual oil pump knob arranged on the manual-automatic oil pump, and the manual-automatic oil pump is also connected with an oil pump starting button.
Preferably: the manual-automatic oil pump is used for automatically starting and stopping the power unit; the oil pump starting button is used for manually starting and stopping the power unit; the manual oil pump knob is used for starting and stopping the power unit in an emergency.
Preferably: the manual-automatic oil pump supplies oil to the hydraulic oil cylinder when being started so as to drive the top ejector rod of the hydraulic oil cylinder to extend upwards and push the abutting driving part to rotate upwards, push the abutting locking part to rotate downwards, and drive the auxiliary lock hook and the main lock hook to rotate under the acting force of the secondary torsion spring after being separated from each other, and enable the bottom limiting part to rotate upwards; the oil pump starting button supplies oil to the hydraulic oil cylinder when being started by pressing; the manual oil pump knob enables the manual oil pump to supply oil to the hydraulic oil cylinder when being driven to rotate.
According to the scheme, the hydraulic locking mechanism of the pure electric heavy-duty truck power conversion system has the following beneficial effects:
1. The bottom limiting part is pressed downwards to rotate by the self gravity of the battery frame to lock the upper lifting lug on the battery frame in the hydraulic lock of the battery frame when the main lock hook is matched with the auxiliary lock hook, so that the battery frame has the effects of simple structure, wide matching locking range and obvious reduction of positioning difficulty;
2. The acting force generated by the relative displacement formed between the battery replacement base and the battery replacement frame and caused by the running of the heavy truck is transmitted to the positions of the main lock hook and the auxiliary lock hook for locking the upper lifting lug, so that the acting on the movable positions of the main lock hook and the auxiliary lock hook is avoided, the service lives of the main lock hook and the auxiliary lock hook are prolonged, and the damage of the main lock hook and the auxiliary lock hook is avoided;
3. the auxiliary lock hook is driven to rotate through the top ejector rod of the hydraulic oil cylinder, so that unlocking effect is achieved after the main lock hook rotates, and the hydraulic locking mechanism is prevented from being normally opened due to deformation of the battery frame.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present application, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a system architecture of a hydraulic locking mechanism of the present disclosure;
FIG. 2 is a schematic diagram of the mechanism of the disclosed hydraulic lock;
fig. 3 is a schematic structural view of an upper shackle according to the present disclosure;
FIG. 4 is a schematic diagram of the structure of the electromagnetic directional valve disclosed in the present application;
FIG. 5 is a schematic diagram of a connection structure between a hydraulic lock and a power conversion base according to the present disclosure;
fig. 6 is a schematic diagram of a connection structure between an upper lifting lug and a battery frame for battery replacement.
Reference numerals illustrate: 1. a hydraulic lock; 101. a primary latch hook; 1011. a top limit part; 1012. a locking groove; 1013. a bottom limit part; 102. an auxiliary latch hook; 1021. an abutment driving unit; 1022. the abutting locking part; 103. a hydraulic cylinder; 1031. fixing the abutting frame; 104. a primary torsion spring; 1041. an auxiliary lock shaft; 105. a primary return sensor; 106. a secondary torsion spring; 1061. a main lock shaft; 107. a secondary return sensor; 2. an upper lifting lug; 201. a locking pin; 3. an oil pipe; 4. a multi-way valve block; 5. a power unit; 501. an electromagnetic reversing valve; 502. an oil pump integrating manual operation and automatic operation; 503. an oil pump start button; 504. a manual oil pump knob; 6. a power exchange base; 7. and (5) replacing the battery frame.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
As shown in fig. 1, the hydraulic locking mechanism of the pure electric heavy truck power conversion system comprises a hydraulic lock 1 and an upper lifting lug 2 matched with the hydraulic lock 1. The hydraulic lock 1 is used for being fixedly connected with a power conversion base 6 of a pure electric heavy card, see fig. 2 and 5, and is provided with a main lock hook 101 and a secondary lock hook 102 which are matched with each other. The upper lifting lug 2 is used for being fixedly connected with the battery frame 7 of the battery replacement of the pure electric heavy truck, see fig. 3 and 6, and is provided with a locking pin 201 which is matched and fixed with the main locking hook 101 and the auxiliary locking hook 102.
The main lock hook 101 is provided with a top limit portion 1011, a bottom limit portion 1013, and a lock groove 1012 between the top limit portion 1011 and the bottom limit portion 1013. The locking groove 1012 mates with the locking pin 201 and allows the locking pin 201 to be inserted into the lock. The sub-lock hook 102 is provided with an abutment driving portion 1021 and an abutment locking portion 1022. A hydraulic cylinder 103 is provided in the hydraulic lock 1, and is configured to abut against the lower side of the abutment driving unit 1021 and drive the rotation of the sub-lock hook 102. The bottom of the abutment lock 1022 is configured to abut against the upper side of the bottom stopper 1013 to define the lock pin 201 in the lock groove 1012.
As shown in fig. 2, the secondary lock hook 102 is provided with a secondary lock shaft 1041 for circumferential rotation. The secondary lock shaft 1041 is sleeved with a primary torsion spring 104, and the primary torsion spring 104 is used for driving the bottom of the abutting locking part 1022 to abut against the top ejector rod of the hydraulic cylinder 103. The main shackle 101 is provided with a main lock shaft 1061 for circumferential rotation. The main lock shaft 1061 is sleeved with a secondary torsion spring 106, and the secondary torsion spring 106 is used for driving the bottom limiting part 1013 to perform upward rotation movement by taking the main lock shaft 1061 as an axis.
At the same time, the hydraulic lock 1 is provided with a fixed abutment 1031. The hydraulic cylinder 103 is mounted and fixed to the fixed abutment 1031. The end of the primary torsion spring 104 abuts against the fixed abutting frame 1031, the upper end abuts against the top of the abutting driving portion 1021, and a downward rotational force is applied to the abutting driving portion 1021.
Therefore, when the hydraulic locking mechanism of the pure electric heavy-duty power conversion system is matched and locked, the power conversion battery frame 7 moves towards the base of the power conversion base 6, and when the power conversion base 6 is kept fixed, the upper lifting lug 2 on the power conversion battery frame 7 gradually approaches the corresponding hydraulic lock 1. At this time, the top ram of the hydraulic cylinder 103 is contracted, the abutment driving portion 1021 is positioned at the lowermost end under the action of the primary torsion spring 104, and the abutment locking portion 1022 is positioned at the uppermost end; the top limit part 1011 and the bottom limit part 1013 are both located at the uppermost end under the action of the secondary torsion spring 106, and when the lock pin 201 is inserted between the main lock hook 101 and the auxiliary lock hook 102, the lock pin 201 is firstly abutted against the bottom limit part 1013, and the bottom limit part 1013 and the top limit part 1011 are rotated downwards in the process of continuing to descend the upper lifting lug 2, and gradually move into the locking groove 1012 formed among the top limit part 1011, the bottom limit part 1013 and the auxiliary lock hook 102, so that after the lower end of the abutting locking part 1022 is abutted and fixed with the upper end of the bottom limit part 1013, the locking of the locking mechanism and the cooperation fixation of the upper lifting lug 2 are realized.
When the hydraulic locking mechanism of the pure electric heavy truck power changing system is opened and the hydraulic lock 1 and the upper lifting lug 2 are separated, the top ejector rod of the hydraulic cylinder 103 extends upwards, and after the abutting driving part 1021 is pushed to rotate upwards, the abutting locking part 1022 rotates downwards, at the moment, the abutting contact surfaces of the auxiliary locking hook 102 and the main locking hook 101 are separated from each other, so that the auxiliary locking hook 102 and the main locking hook 101 are effectively separated under the action of the secondary torsion spring 106, and the upper lifting lug 2 is taken out from the hydraulic lock 1 conveniently.
As shown in fig. 1 and 2, the hydraulic lock 1 is provided with a primary return sensor 105 and a secondary return sensor 107. The primary return sensor 105 is matched with the auxiliary lock hook 102 and is used for detecting the return state of the top ejector rod of the hydraulic cylinder 103. The secondary return sensor 107 is matched with the main lock hook 101 and is used to detect the locked state of the bottom limit part 1013. In this embodiment, four hydraulic locks 1 respectively located at corresponding corners are disposed on the power exchange base 6, and four upper lifting lugs 2 respectively matched with the corresponding hydraulic locks 1 are disposed on the power exchange battery frame 7, so that connection stability of the power exchange battery frame 7 and the power exchange base 6 is improved when the hydraulic locks 1 and the upper lifting lugs 2 are locked in a matched manner.
As shown in fig. 1 and 3, the oil pipe 3 is connected to the hydraulic cylinder 103. The oil pipe 3 is connected with a multi-way valve block 4, and the multi-way valve block 4 is connected with a power unit 5. The output end of the multi-way valve block 4 is connected with the hydraulic cylinders 103 in the four hydraulic locks 1, and the input end is connected with the power unit 5. The power unit 5 includes an electromagnetic directional valve 501 connected to the multi-way valve block 4, an automated manual oil pump 502 connected to the electromagnetic directional valve 501, and an automated manual oil pump knob 504 mounted on the automated manual oil pump 502. The manual-automatic oil pump 502 is also connected with an oil pump start button 503. Wherein, the manual-automatic oil pump 502 is used for automatically starting and stopping the power unit 5; the oil pump start button 503 is used for manually starting and stopping the power unit 5; the manual oil pump knob 504 is used for emergency starting and stopping of the power unit 5. When the hydraulic locking mechanism of the pure electric heavy-duty truck power changing system is unlocked, the pure electric heavy-duty truck power changing system is realized by adopting an automatic mode, a manual mode or an emergency mode. In the automatic mode, the manual-automatic oil pump 502 supplies oil to the hydraulic cylinder 103 when being started, so as to drive the top ejector rod of the hydraulic cylinder 103 to extend upwards and push the abutting driving part 1021 to rotate upwards, push the abutting locking part 1022 to rotate downwards, and drive the auxiliary locking hook 102 and the main locking hook 101 to separate from each other, then the main locking hook 101 rotates under the acting force of the secondary torsion spring 106, and the bottom limiting part 1013 rotates upwards. In the manual mode, the oil pump start button 503 supplies oil to the hydraulic cylinder 103 when being started by pressing, so as to drive the top ram of the hydraulic cylinder 103 to extend upward and push the abutment driving part 1021 to rotate upward, push the abutment locking part 1022 to rotate downward, and after the auxiliary lock hook 102 and the main lock hook 101 are driven to disengage from each other, the main lock hook 101 rotates under the force of the secondary torsion spring 106, and the bottom limit part 1013 rotates upward. In the emergency mode, the manual oil pump knob 504, when driven to rotate, causes the manual oil pump 502 to supply oil to the hydraulic cylinder 103, so as to drive the top ejector rod of the hydraulic cylinder 103 to extend upwards and push the abutting driving part 1021 to rotate upwards, push the abutting locking part 1022 to rotate downwards, and after the driving auxiliary lock hook 102 and the main lock hook 101 are separated from each other, the main lock hook 101 rotates under the acting force of the secondary torsion spring 106, and causes the bottom limiting part 1013 to rotate upwards.
In summary, the bottom limiting part 1013 is pressed downwards to rotate downwards by the self gravity of the battery replacement frame 7, so that the upper lifting lug 2 on the battery replacement frame 7 is locked in the hydraulic lock 1 of the battery replacement base 6 when the main lock hook 101 is matched with the auxiliary lock hook 102, and the battery replacement frame has the effects of simple structure, wide matching locking range and obvious reduction of positioning difficulty. Meanwhile, acting force generated by relative displacement formed between the battery replacement base 6 and the battery replacement frame 7 during the running of the heavy truck is transmitted to the parts of the main lock hook 101 and the auxiliary lock hook 102 for locking the upper lifting lug 2, so that the acting on the movable parts of the main lock hook 101 and the auxiliary lock hook 102 is avoided, the service lives of the main lock hook 101 and the auxiliary lock hook 102 are prolonged, and the damage of the main lock hook 101 and the auxiliary lock hook 102 is avoided. In order to avoid the influence of the deformation of the battery box 7 on the normal opening of the hydraulic locking mechanism, the auxiliary locking hook 102 is driven to rotate by the top ejector rod of the hydraulic oil cylinder 103, and then the unlocking effect is realized after the main locking hook 101 rotates.
The references to "first," "second," "third," "fourth," etc. (if present) are used to distinguish similar objects from each other and are not necessarily used to describe a particular order or sequence. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments described herein may be implemented in other sequences than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed or inherent to such process, method, or apparatus.
It should be noted that the description of "first", "second", etc. in this disclosure is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implying an indication of the number of technical features being indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present application.
The principles and embodiments of the present application have been described herein with reference to specific examples, the description of which is intended only to assist in understanding the methods of the present application and the core ideas thereof; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in accordance with the ideas of the present application, the present description should not be construed as limiting the present application in view of the above.
Claims (5)
1. The utility model provides a pure electric heavy truck trades electric system hydraulic locking mechanism which characterized in that: comprises a hydraulic lock (1) and an upper lifting lug (2) matched with the hydraulic lock (1);
the hydraulic lock (1) is used for being fixedly connected with a power conversion base (6) of the pure electric heavy truck, and is provided with a main lock hook (101) and an auxiliary lock hook (102) which are matched with each other;
the upper lifting lug (2) is used for being fixedly connected with a battery replacement frame (7) of the pure electric heavy truck, and is provided with a lock pin (201) which is matched and fixed with the main lock hook (101) and the auxiliary lock hook (102);
The main lock hook (101) is provided with a top limit part (1011), a bottom limit part (1013) and a locking groove (1012) positioned between the top limit part (1011) and the bottom limit part (1013), wherein the locking groove (1012) is matched with the lock pin (201) and is used for the lock pin (201) to be inserted and locked;
The auxiliary lock hook (102) is provided with an abutting driving part (1021) and an abutting locking part (1022), a hydraulic cylinder (103) which is used for abutting against the lower side of the abutting driving part (1021) and driving the auxiliary lock hook (102) to rotate is arranged in the hydraulic lock (1), and the bottom of the abutting locking part (1022) is used for abutting against the upper side of the bottom limiting part (1013) so as to limit the lock pin (201) in the locking groove (1012);
The auxiliary lock hook (102) is provided with an auxiliary lock shaft (1041) for circumferential rotation, the auxiliary lock shaft (1041) is sleeved with a primary torsion spring (104), and the primary torsion spring (104) is used for driving the bottom of the abutting locking part (1022) to abut against a top ejector rod of the hydraulic oil cylinder (103); the main lock hook (101) is provided with a main lock shaft (1061) for circumferential rotation, the main lock shaft (1061) is sleeved with a secondary torsion spring (106), and the secondary torsion spring (106) is used for driving the bottom limit part (1013) to perform upward rotation movement by taking the main lock shaft (1061) as an axis;
The hydraulic lock (1) is provided with a fixed abutting frame (1031), the hydraulic oil cylinder (103) is fixedly arranged on the fixed abutting frame (1031), the primary torsion spring (104) abuts against the fixed abutting frame (1031) and applies a downward rotating acting force to the abutting driving part (1021);
The hydraulic lock (1) is provided with a primary return sensor (105) and a secondary return sensor (107), wherein the primary return sensor (105) is matched with the auxiliary lock hook (102) and is used for detecting the reset state of a top ejector rod of the hydraulic cylinder (103); the secondary return sensor (107) is matched with the main lock hook (101) and is used for detecting the locking state of the bottom limit part (1013).
2. The hydraulic locking mechanism of a pure electric heavy-duty truck power conversion system according to claim 1, wherein: the hydraulic oil cylinder (103) is connected with an oil pipe (3), the oil pipe (3) is connected with a multi-way valve block (4), and the multi-way valve block (4) is connected with a power unit (5).
3. The hydraulic locking mechanism of a pure electric heavy-duty truck power conversion system according to claim 2, wherein: the power unit (5) comprises an electromagnetic reversing valve (501) connected with the multi-way valve block (4), an manual-automatic oil pump (502) connected with the electromagnetic reversing valve (501) and a manual oil pump knob (504) arranged on the manual-automatic oil pump (502), and the manual-automatic oil pump (502) is also connected with an oil pump starting button (503).
4. A hydraulic locking mechanism of a pure electric heavy-duty truck power conversion system according to claim 3, wherein: the manual-automatic oil pump (502) is used for automatically starting and stopping the power unit (5); the oil pump starting button (503) is used for manually starting and stopping the power unit (5); the manual oil pump knob (504) is used for starting and stopping the power unit (5) in an emergency.
5. The hydraulic locking mechanism of the pure electric heavy-duty truck power conversion system according to claim 4, wherein: the manual-automatic oil pump (502) supplies oil to the hydraulic oil cylinder (103) when being started so as to drive a top ejector rod of the hydraulic oil cylinder (103) to extend upwards and push the abutting driving part (1021) to rotate upwards, push the abutting locking part (1022) to rotate downwards, and drive the auxiliary lock hook (102) and the main lock hook (101) to separate from each other, wherein the main lock hook (101) rotates under the acting force of the secondary torsion spring (106) and enables the bottom limit part (1013) to rotate upwards; the oil pump starting button (503) supplies oil to the hydraulic oil cylinder (103) when being started by pressing; the manual oil pump knob (504) enables the manual oil pump (502) to supply oil to the hydraulic oil cylinder (103) when the manual oil pump knob is driven to rotate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110907942.8A CN113415207B (en) | 2021-08-09 | 2021-08-09 | Hydraulic locking mechanism of pure electric heavy-duty truck power-exchanging system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110907942.8A CN113415207B (en) | 2021-08-09 | 2021-08-09 | Hydraulic locking mechanism of pure electric heavy-duty truck power-exchanging system |
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| Publication Number | Publication Date |
|---|---|
| CN113415207A CN113415207A (en) | 2021-09-21 |
| CN113415207B true CN113415207B (en) | 2024-05-03 |
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|---|---|---|---|---|
| WO2016198552A1 (en) * | 2015-06-10 | 2016-12-15 | Battswap, Inc. | Battery exchange system |
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